Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1540+820 (2026b, independent mode)

Data - BVID - NED - MOJAVE - SIMBAD - PanSTARRS-1

Right ascension: 234.2501707258258°
Declination: 81.9086106249483°
No. sessions: 6
No. delays: 353
Defining: No
RMS(α cos δ) = 91.5888 mas
RMS(δ) = 35.0848 mas
Variability ellipse semimajor axis = 97.7366 mas
Variability ellipse semiminor axis = 8.1857 mas
Variability ellipse position angle = 69.4 deg
Equivalent α-δ correlation = 0.97

Observed in only 6 session(s)

Quarterly time series for 1540+820 (2026b, 4 global solutions)

Data

Right ascension: 234.2501716029001°
Declination: 81.9086110732901°
No. sessions: 6
No. delays: 353
Defining: No
RMS(α cos δ) = 95.3930 mas
RMS(δ) = 77.9036 mas
Variability ellipse semimajor axis = 124.5937 mas
Variability ellipse semiminor axis = 18.8355 mas
Variability ellipse position angle = 50.5 deg
Equivalent α-δ correlation = 1.05

Observed in only 6 session(s)